diff --git a/2000/rince/README.md b/2000/rince/README.md
index 23c15ee45..bb70009c7 100644
--- a/2000/rince/README.md
+++ b/2000/rince/README.md
@@ -86,7 +86,7 @@ Julian day number (given as a fractional component). E.g.:
 ```
 
 A Julian day is defined to be the number of days since January 1st in the year
-`-4712 (4713BC)`, starting at 12 noon GMT.\[1\] To aid conversion from our time
+`-4712 (4713BC)`, starting at 12 noon GMT.[^1] To aid conversion from our time
 (GMT) to Julian day there is a supplementary program named:
 [dmy2jd.c](dmy2jd.c). Run it with `day_float month year` as arguments. See below
 for an example.
@@ -362,10 +362,10 @@ in places where at first glance the code appears to be executed.
 
 ### References
 
-[1] Astronomical algorithms (1st ed): page 59
+[^1]: Astronomical algorithms (1st ed): page 59
 Jean Meeus. Published by Willmann-Bell Inc.
 
-[2] Astronomical algorithms (1st ed): pages 285-299.
+[^2]: Astronomical algorithms (1st ed): pages 285-299.
 Jean Meeus. Published by Willmann-Bell Inc.